An Examination Consisting of Ten True-Or-False Questions Was Taken by a Class

question 38

Multiple Choice

An examination consisting of ten true-or-false questions was taken by a class of 100 students. The probability distribution of the random variable X, where X denotes the number of questions answered correctly by a randomly chosen student, is represented by the accompanying histogram. The rectangle with base centered on the number 8 is missing. What should be the height of this rectangle? ​ ​

• A) 0.35
• B) 0.25
• C) 0.4
• D) 0.2

Comprehend the impact of different upbringing environments (home-reared vs. day-care) on children's behavior and development.

Grasp the concept and mechanisms of emotional regulation in children and its significance.

Assimilate the knowledge regarding the role of vaccines in relation to autism and the bases of such medical conclusions.

Acquire insights into the nature and development of stranger anxiety in children.

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Definitions:

Shiller Real Home Price Index

An inflation-adjusted index that tracks changes in the price of residential real estate over time, developed by economist Robert Shiller.

Mean Square Error

It is a measure used in statistics to indicate the average squared difference between the estimated values and the actual value.

Shiller Real Home Price Index

An index that measures changes in the price of residential properties, adjusted for inflation.

Simple Moving Average

A calculation that averages a set number of past data points to smooth out short-term fluctuations and highlight longer-term trends or cycles.